docs: def updateSquareFees(paymentRecord):
      '''
      The Square Checkout API does not calculate fees immediately, so this task is
      called to be asynchronously run 1 minute after the initial transaction, so that
      any Invoice or ExpenseItem associated with this transaction also remains accurate.
      '''
  
      fees = paymentRecord.netFees
      invoice = paymentRecord.invoice
      invoice.fees = fees
      invoice.save()
      invoice.allocateFees()
      return fees